For database, Excel, Google Sheets, or AirTable (web based).

The other half is: excellent finished product design and management at a reasonable cost.

I suggest contacting a few and having phone conversations with them to find the one that best fits your needs/situation. 

I realize I'll need to look at zoning, put together a site plan, etc. to know exactly what's possible in terms of how many units can fit on the site.

By starting with an ADU or guest suite you have very little risk and can provide excellent service to your guest.

I've used Myfax for yearsThey have different programs to fit your needs

Make sure that strategy fits into your investing time horizon and goals and makes sense from a return perspective. 

The strategic upgrades and effective market timing resulted in a strong return on investment, demonstrating our ability to execute a value-add strategy and achieve excellent results for our partners.

Great guy and an excellent agent.

So let me get this straight; F-economics, F-the reasons for rent increases, no F-it all because "Ugh, think make me brain owie" so it's just a straight line thing for ya that moving really ate into your daily Starbucks budget so Landlords should be picking up the bill?